m68knommu: remove duplicate ColdFire mcf_autovector() code

Each of the ColdFire CPU platform code that used the old style interrupt
controller had its own copy of the mcf_autovector() function. They are all
the same, remove them all and create a single function in the common
coldfire/intc.c code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/m68knommu/platform/coldfire/intc.c b/arch/m68knommu/platform/coldfire/intc.c
index c81ab6e5cf26..f7a61346ee25 100644
--- a/arch/m68knommu/platform/coldfire/intc.c
+++ b/arch/m68knommu/platform/coldfire/intc.c
@@ -18,6 +18,33 @@
 #include <asm/coldfire.h>
 #include <asm/mcfsim.h>
 
+/*
+ * Define the vector numbers for the basic 7 interrupt sources.
+ * These are often referred to as the "external" interrupts in
+ * the ColdFire documentation (for the early ColdFire cores at least).
+ */
+#define EIRQ1   25
+#define EIRQ7   31
+
+/*
+ * Interrupts can be "vectored" on the ColdFire cores that support this old
+ * interrupt controller. That is, the device raising the interrupt can also
+ * supply the vector number to interrupt through. The AVR register of the
+ * interrupt controller enables or disables this for each external interrupt,
+ * so provide generic support for this. Setting this up is out-of-band for
+ * the interrupt system API's, and needs to be done by the driver that
+ * supports this device. Very few devices actually use this.
+ */
+void mcf_autovector(int irq)
+{
+        if ((irq >= EIRQ1) && (irq <= EIRQ7)) {
+                u8 avec;
+                avec = __raw_readb(MCF_MBAR + MCFSIM_AVR);
+                avec |= (0x1 << (irq - EIRQ1 + 1));
+                __raw_writeb(avec, MCF_MBAR + MCFSIM_AVR);
+        }
+}
+
 static void intc_irq_mask(unsigned int irq)
 {
 }